[The World]

Chicago citation style
Ptolemy, 2nd cent. [The World]. 1511. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/st74cx52z. (Accessed June 22, 2018.)
APA citation style
Ptolemy, 2nd cent, (1511) [The World]. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/st74cx52z
MLA citation style
Ptolemy, 2nd cent. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/st74cx52z>.
Note: These citations are programmatically generated and may be incomplete.